Artificial tooth.



H. W. WENZEL ARTIFICIAL TOOTH. APPLICATION FILED MAY 2, I917.

Patented July 10, 1917.

TTORNtYb HENRY W. WENZEL, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO H. D. J USTI & SON, OF PHILADELPHIA, PENNSYLVANIA, A FIRM COMPOSED 0F HENRY D. JUSTI AND HENRY M. JUSTI.

ARTIFICIAL 'IOOTH.

Application filed May 2, 1917.

To all whom it may concern:

Be it known that I, HENRY W. WENZEL, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Artificial Tooth, of which the following is a specification.

My invention relates to an improvement in an artificial tooth more particularly adapted for vulcanite work, and has for its-object the elimination of metallic pins or other devices of the kind as means for attachment to the mouth plate, preventing the formation of air pockets heretofore existing in such plates, as well as providing a strong connection for the tooth with said plate.

The invention is satisfactorily illustrated in the accompanying drawing, but the important instrumentalities thereof may be varied, and so it is to be understood that the invention is not limited to the specific details shown and described, as long as they are within the spirit or scope of the claims.

Figure 1 represents a side elevation of an artificial tooth embodying my invention.

Fig. 2 represents a plan view thereof.

Fig. 3 represents a transverse section on line 33 Fig. 1. Fig. 4: represents a diagrammatic view of a number of the teeth in position.

Similar numerals of reference indicate corresponding parts in the figures.

Referring to the drawings 1 designates an artificial tooth, the same having thereon on the lingual side thereof the cervical ridge 2.

In the opposite sides of the tooth in the longitudinal direction thereof are the grooves 3 each of which exists between the rear wall 4 of the body of the tooth and the front wall 5 of the cervical ridge leaving between the latter and said body the neck 6 which is of reduced width and has in it the opening or vent 7 which extends transversely therethrough.

The lower portion of said front wall 5 of the cervical ridge is extended forwardly forming the oflsets 8 which as most plainly shown in Fig. 1 produce shoulders which project into the adjacent portions of the Specification of Letters Patent.

Patented July 10, 1917.

Serial No. 165,810.

grooves 3, thus increasing the thickness of the rear portions of the cervical ridge adjacent to the opening 7, and consequently strengthening said portions in proximity to said opening 7, thus greatly compensating for any weakness that might be occasioned by the existence of said opening 7 in the neck of the tooth.

It will be seen also that the walls of the grooves 3 are angular in the direction of their length, whereby the plate material will lie fiat against the same, and the shoulders formed by the ofisets 8 in said grooves will provide additional means for interlocking the tooth with the plate material and so forming a strong connection for said members, without the employment of metallic pins or other devices of the class.

Furthermore, in the process primarily of connecting the tooth with the plate air is permitted to escape through the grooves 3 and opening or vent 7, thus preventing the formation of air pockets in the mouth plate or tooth by the undercuts in, the latter, said opening or vent also receiving some of the material of the mouth plate, which being anchored therein adds increased strength to the connection of the tooth with said plate and vice versa.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is

1. An artificial tooth having a cervical ridge, and longitudinally-extending grooves in the side of the tooth in the neck of said ridge intermediate of the body of the tooth and the front wall of said ridge.

2. An artificial tooth having in its side a longitudinally-extending groove, a wall of the latter having thereon an offset which projects therefrom into said groove toward the opposite wall thereof.

3. In an artificial tooth having a cervical ridge and a neck of reduced width intermediate of said ridge and the body of the tooth, and an opening in said neck extending transversely therethrough.

HENRY W. WENZEL.

Eopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

